Use the bind-control for NID 0x1a and 0x1b as Master volume control
on AD1986 model=laptop as well as model=laptop-eapd.  This will fix
the missing output on some devices.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@suse.cz>